Roller-bearing.



Patented Apr. 4,1916.

I .1 p B C I E l/Vl/ENTOR I BY hit m TTORNEY UNITED STATES PATENT OFFICE.

HENRY L. BOOK, OF TOLEDO, OHIO, ASSIGNOR TO WILLIAM EMIL BOOK, OF TOLEDO,

OHIO.

ROLLER-BEARING.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed July 16, 1912. Serial No. 709,736.

To all whom it may concern:

Be it known that I, HENRY L. BooK, a citizen of the United States of America, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements'in Roller-Bearings, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to roller bearings adapted to carry both radial loads and end thrust, and the construction is particularly designed for use where the end thrust stress is in the preponderance.

To this end the invention consists in the peculiar construction of a series of bearings, each comprising conical rolls and cooperating conical race members, together with means for holding the rolls from longitudinal movement, as hereinafter set forth.

In the drawings: Figure 1 is a longitudinal section through the bearing; and Fig. 2 is a cross section on line a:a: Fig. 1.

A is a rotatable member such as a shaft, and which is subjected to both end thrust and radial load, with the former in the preponderance.

B B are conical bearing surfaces upon the members A and D, arranged in longitudinal series; 0 C are conical rolls arranged in circumferential series surrounding the bearing surfaces B and B; and D D are conical race members for cooperating with the rolls C C and conical bearings B B. Both series of rolls C and C are arranged to converge toward a point in the axis of the rotatable member, so that all portions of the contacting surfaces will travel at the same relative speeds. The angle of convergence is however preferably different in p the two series, the obliquity of the rolls C being greater than that of the rolls C. Thus the rolls C are arranged at the more favorable angle for receiving the end thrust, while the rolls C, by being relieved of end thrust, are more favorable to the carrying of radial loads.

To retain the rolls from endwise displacement without retarding their free rolling action, each roll is provided with a head E at its large end, which latter is provided with a spherical end surface F transverse to the cone of which the conical roll surface is a part and extending both within and without said cone.

therefore prevent endwise movement of the roll without any differential speed or rub-.

bing action thereupon. Either one or both of the members G and H may also tangentially engage the surfaces upon opposite sides of the heads E, and, as shown, the member H is provided with a surface L for engaging a spherical surface K on the head E, being tangent thereto at'a point in the intersection of the cone of which the respective conical roll surface is a part with the spherical surface K.

WVith the construction described in operation, the end thrust is transmitted from the conical surfaces B B through the rolls to the conical race members D D, While the wedging out of the rolls from between said point in alinement with the outer bearing of the roll, will transmit said thrust to a member N fixed thereto and to the race members D and D. Suitable cage members 0 and P are arranged to retain the rolls in proper spaced relation.

What I claim as my invention is:

1. A roller bearing comprising a rotatable member, a plurality of circumferential series of conical rolls thereabout, arranged at different points in the length thereof and at different angles of, obliquity, conical bearings upon said rotatable member for engaging said rolls, conical race members surrounding said rolls, a head at the large end ofeach roll, having a spherical surface transverse to the cone of which the conical roll surface is a part, and a member having a surface tangent to said spherical surface at a point in the intersection of said cone with said spherical surface for resisting endwise displacement of the roll.

2. A roller bearing, comprising a rotatable member, a plurality of circumferential series of conical ro ls surrounding said rotatable member and arranged longitudinally thereof and at diiferent points in its length, the axes of said rolls extending in the same general direction but at diiferent angles of obliquity, conical bearings upon said r0- tatable member for engaging said rolls, conical race members surrounding said rolls, and means in true rolling contact with said rolls for retaining the same from endwise displacement.

3. A roller bearing, comprising a rotatable member, a plurality of circumferential series of conical rolls surrounding said rotatable member at different points in the length thereof, a portion of said rolls provided with heads each having a spherical surface transverse to the cone of which the conical roll surface is a part, the remaining rolls provided with heads each having opposed spherical surfaces transverse to the In testimony whereof I affix my signature in presence of two witnesses.

HENRY L. BUCK.

Witnesses:

JAMES P. BARRY, H. E. BOWMAN. 

